Leg muscle exerciser



FIG. 1 is a side elevational view of a leg muscle exerciser, showing my new design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a bottom plan view thereof.

FIG. 4 is a front elevational view thereof; and

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a leg muscle exerciser, as shown. 